Pop-Tart's new flavors have hit the shelves, and the new flavors are Gone Nutty Peanut Butter and Gone Nutty Chocolate Peanut Butter, the company announced on Tuesday.

Kellogg revealed its new pop-tart flavors on May 11 over Twitter. "PeanutButter lovers, you now have our permission to freakout [sic] Peanut Butter Pop-Tarts are here! For good!," the company stated, including a Vine video showing a "magical" reveal of the new peanut butter flavored pop-tart.

The International Business Times reports that for the first time in 27 years, Kellogg's will feature peanut butter in its pop-tarts (the company discontinued its Peanut Butter & Jelly Pop-Tart in 1986).

According to the Christian Science Monitor, Kellogg's newest pop-tart iterations may be a way for the company to lasso the adult consumer. With cereal sales in the U.S. dwindling (Americans want something they can easily eat on the go) putting more nutrients in their famous breakfast bars could encourage adults to eat more breakfast foods.

Kellogg Company, founded in 1906, manufactures and markets all kinds of ready-to-eat foods, including cereals, cookies, crackers, frozen waffles and veggie foods, and sells them in more than 180 countries. It ranks 37 on Forbes' list of the world's most powerful brands, on the heels of companies such as Coca-Cola, McDonald's and Budweiser, and beating out other brands like Starbucks, Frito-Lay and Wrigley's. According to Forbes, the Kellogg Company boasts sales of $14.2 billion.

Kellogg also controls about 34 percent of the cereal market, compared to General Mills' 31 percent, Vault reports. Over the past few years, the company has launched several healthy cereals, such as a low-carb Special K and Special K Red Berries, in hopes of jump-starting the company's growth.

The company has rolled out a plethora of pop-tart flavors over the years, including Chocolate Banana Split, Gingerbread, Chocolate Chip Cookie Dough and Low Fat Frosted Apple Cinnamon. According to CalorieCount.com, an online resource that provides health stats for hundreds of food products, pop-tart flavors vary wildly in their nutritional values. The watchdog rates foods based on their fat-protein-calorie ratios, and assigns them a letter grade.

The healthiest pop-tart, according to CalorieCount, is the Whole Grain with Fiber Strawberry pop-tart.

It's least healthy, according to the website? The Pastry Swirls Apple Cinnamon Danish.